Apparatus for making green-sand cores.



I. W. GIBNEY.

APPARATUS FOR MAKING 01mm SAID com APPLIOATIOI run out. I, an.

899,250. mm Sept 22, 1908.

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' Patented B61);- 22, 1908.

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it Marika-mg Um En STATES PATENT OFFICE.

JAMES W. GIBNEY, OF BUFFALO. .\'I'I\\' YHRK. .XSQIGNOR T0 W. P TA YLOR COMPANY, OF BUFFALO, NEW YORK, A ORPORATION OF KEW YORK.

APPARATUS ron name snark-amp cons.

Specification of Letters Patent.

Patented Sept. 22, 1903.

Application filed October 6, 1907. Serial No. 898,097.

of the cores for multi- )art molds em loyed in casting car journal oxes' and simi ar devices.

The princi 1a] objects of the invention are to simplify t 10 construction of apparatus of this character 'and' tUStrPngthen and stiffen the core.

This invention also relates to'certain details of construction of the apparatus and the mold or core, all of which will be fully and clearly hereinafter described and claimed reference being had to the accompanying drawings in which a preferred adaptation of the-apparatus and core are illustrated.

Figure l is a side elevation of the apparatus complete mounted upon a suitable support or table. Fig. 2 is a top plan view of the apparatus and support shown in Fig 1, a portion of one end of the table being broken away, the apparatus being in condition to have thesand introduced therein. Fig. 3 is a vertical central longitudinal section on line a a, Fig. 2. F ig. 4 is an end elevation of the im )lOVfill apparatus, looking in the direction oi the arrow V ig. l, a cross section being shown through the su )porting table. Fig. 5 is an end elevationo the improved apparatus looking in the direction opposite to the arrow V, Fig. 1, a cross section being shown through the supporting table. Fig. 6 is a cross section onhne b b, Fig. 2. Figs. 7 and 8 are detached side and bottom views of the sectional me al frame. Fig. 9 is a detached inner viewof one of the hinged sides of the core box. Fig. 10 is an enlarged detached top plan vicw'of the horizontal locking piece. Fig. 11 is an enlarged detached front elevation of. the metal insert which is supported bv the horizontal locking piece. Fig. 12 is a detached view of one of the metal forming pieces. Fig. 13 is a do tached view of the perforated sand plate. Fig. 14 is a central vertical longitudinal secthrong tion through the improved apparatus on line a a, Fig. 2, showing the core complete. Flii.

l5 and 16 are detached outside views of end plates carried by the arbor. Fig. 17 is V a detached view of one of the anchors. F ig.

18 is a transverse vertical section on line 6 c,

I Fig. .14, showing the sides swung outwardly,

so as to permit the removal of the core. Fig. 19 is a side view of the complete core.

In referring to the drawings in detail, like numerals designate like parts.

The apparatus consists broadly of a base 1 sides 2, which are hinged to the base, en pieces and transverse top members f or fastening the sides in their closed operative sition. A sup ort or skeleton table consisting of two para lel side beams 3 and 4, mounted on legs 5, and connected by transverse beams 6, is preferably employed to support the apparatus. The. base is fastened upon the support or table by brackets 7, which are secured res ctivel T to the side beams 3 and 4 of the tab e and the base by screws 8 and 9, see Figs. 1 and 2. The top surface of the base conforms in contour to the bottom portion of the core to be made and this constitutes the bottom portion of the pattern.

The sides 2, shown in Fig. 9, with their inner su aces conformingto the contour of the sides of the each provided on their outer surfaces with vertical enlargements 10, which bend at the bottom and extend inwardly forming at the bottom laterally extending approximately horizontal lugs 11. These ugs are provlded with eye openings and constitute one member of a hinge for connecting the sides to the base. The other member of each hingeconsists of a depending forked portion 12, projecting downward mm the under surface of the basebetwecn the forks of which the lug 11, is )ivoted by a pivot pin, which passes the eye openiin in the lug 11, and similar eye openings in the forks.

In the present construction illustrated, cachsidc is hinged by two separate hm es located near the lower corners thereof an a single long pivot pin 13, is extended through the eye openings II] both hinges and 18, for the best views of ti tion.

The side beams 3 and 4, are so spaced apart and the apparatus is so located t lereon that iis construcsee Figs. 14

means the sides are limited in their opening movement and cannot swing down so as to bring undue strain upon the hinges tending to break the same. i

Owing to the sides being hinged beneath the base and fairly near the center thereof, the sides need to swing open but. a shortdistance to completel v free themselves from the core as shown in Fig. 18.

The core made b v this apparatus is of a built up character and cons sts in part of green sand, in part of dry sand and in part of metal reinforcing and supporting parts.

A core' arbor consisting of a tubular body 14, and two metal end pieces 1.5 and 16, is seated upon the base and forms a portion of the apparatus while the core is being made and a ortion of the completed core when it istinislied and removed from the apparatus. The end pieces 15 and 16, are fastened upon the ends of the bod v 14, by set' screws and form the ends of the ap )aratus when in place therein and the ends oi the core when completed. The tubular body 14, is perforated at intervals with openings 17, see Figs. 2, 3, 14, and 13, to provide outlets for the air which is forced out of the gre n sand during the ramming or compressing thereof. The tubular body in fact constitutes the backbone of-the core, as shown inFig. 14, and a series of inverted substantially U shaped metal pieces 18, are hung at intervals upon the arbor and form st lengthening ribs for the core. These ribs are formed substantially as shown in Figs. 2, 3 and 17, and have op ositely extending fins 19 and 20, which em ed themselves in the. green sand and serve both to anchor the ribs therein arid to stiffen and strengthen. the green sand core.

A vertical metal frame is arran ed transversely in the core and consists 0 an upper member 21, rovided with depending end lugs 22, \\'l1l('l are adapted to fit over and assist in locking the sides in their closed position and two lower inserts 23 and 24, which are fitted through vertical slots .25, shown in Fig. 9. The upper member 21, is formed as shown in Figs. 7 and S, and has a long vertical slot 26, in which the upper portion of a dry sand plate 27, is supported, see Fi s. 2, 3 and 14. The plate 27, is shaped as shown in Fig. 13, being rectangular in outline and having an ob|on central openin 23, which is tapered slight v as shown in Pig. 3. The inserts 23 and 24, are shaped as shown in Fig. 12, having a curved inner surface and a convenient projecting finger piece 29, and are fitted horizontally through the slots 25, so as to form the lower groove 30, of the core, see Fig. 19. The upper groove 31, is formed by the depending portion 32, of the member I orted between a vertical shoulder 33 Formed on the base and the inserts 23 and 24 see Figs. 3 and 14.

The sides are locked in place not only by 1 the lugs of the metal frame but also y a 4 transverse horizontal locking piece 34, which i forms a bridge that extends across between the sides and has depending lugs 35, which project down and fit over the edges of the sides. The locking piece 34', has one of its edges beveled at 36, as shown in Fi s. 3, l0 and 14, to form the top )ortion ofthe lid seat of the box body so ttat the entire lid seat is formed com )le-tel; bv the. core. The great advantage 0 this 15 that the surfaceof the seat in the. completed casting is even and flat and constitutes a perfect seat forthe lid. The locking piece 34, has two oblong vertical slots 37 and 38 through which the depending portions 39 and 40, of a top insert 41, project.

The end )ieces of thearbor are res ectivelv provit ed with lateral flanges 42 am 43, which extend completely around the outer margins thereof and constitute surroundin and projecting metal edges for the green S8.I1( ends of the core, see Fi 14.

The base 1 and 2 sides are each provided with projecting fingers or lugs 44 at their and edges, which serve to support the end pieces 15 and 16 against end movement. when the arbor is in place within the box, see Figs. 2, 3, and 14.

In makin a core with this improved apparatus the iinged sides 2 are swung into a vertical position and retained in )lace by the transverse locking piece 34. he vertical metal frame. piece 21, is then inserted in the core box so that its de ending lugs 22 fit upon the outer surfaces 0 the side 2, thereby assisting the transverse locking piece 34 in maintainin the hin ed sides in an upright position. he two ower insert-s 23 and 24 are then inserted in the openings 25 int he hinged sides and the top insert 41 placed in position in the transverse locking piece. The

erforated dry sand plate 27 is now inserted in the vertical slot or opening 26 in the vertical metal frame. piece 21, and pushed down between the inserts 23 and 24 and the shoulder 33 until its bottom edge rests upon the top surface of the base 1, see Fig. 3. The

end plate 16 which is detached from the. tu-

bular body 14, is placed in position in the end of the core box, being supported upon the base 1, and held against displacement by the projeetin r fingers 44. The tubular body 14 of the 11])01' is now inserted in the core box from the opposite end so that the end thereof passes through the. opening 28 in the dry I sand late 27, and into the opening in the end p ate 16 where it is secured by the set, screw, see Figs. 3 and 14. By referring to the drawings it will be seen that the end lat-es 15 and 16 seat snugly against the pro- Gfrll. The lower portion of the plate is sup- 1 ecting fingers so that all endwise movement which is tamped or compressed by the molder.

in the usual manner to form a mold. The core. being completed, the lowerinserts are drawn horizontally out of the slots in the sides. the upper insert is drawn vertically up from the transverse locking piece, the transverse locking piece is lifted on an incline )arallel with the Incline of the corcsurfacew iich forms the lidseat, andthe upper member of the vertical frame is lifted vertically up to entirely relieve the sides which are then turned into the position shown in Fig. 18. The completed core ,is now ready-to be removedby the workman.

The chief advantages of this inventionreside in the manner of strengthening and stitl'ening the core both internally and at its ends, the formation of the lid seat completely upon the core and the multipart const ruction of the metal frame for the dry sand plate which enables it to be easily and quickly inserted in place or withdrawn.

I claim as my invention.

1. lnan improved aiparatus of the class described. a base shaped to contour to form a pattern for the lower portion of thccorc, sides hinged to the base and shaped in contour to form a pattern for the sides of the core and a transverse locking piece for positively securing the sides in closed position; said locking piece also constituting a pattern for the u )per portion of the lid seat, whereby the lid seat is formed completely with the core, substantially as set forth.

2. In an improved a paratus of the class described, a base shapet 1n contour to form a pattern for the lower portion of the core, sides hinged to the base and shaped in contour to form a pattern for the sides of the core and a transverse locking piece 1' or positively securing the sides in closed position; said locking piece having a beveled edge forming; a pattern for the upper portion of the lid seat. substantially as set forth.

3. In an apparatus of the class described, a base and movable sides sha )ed to constitute a pattern for the bottom and sides of the core and to form the lower portion and sides of the lid seat and an upper element mounted on the sides and consisting of a narrow transverse bar shaped to forin the upper portion of the lid seat, whereby the entire lid seat is 'ormcd complete with the core, substantially as set forth.

4. In an apparatus of the class described, a

base and movable sides sha ed to constitute a pattern for the bottom ant sides of the core and to form the lower portion and sides of the lid seat and an upper e ement mounted on the sides and consisting of a narrow transverse the core, loosely swinging inverted U described, a metalt'rame bar shaped to form the upper port-ion of the lid seat and two depending end portions adapted to lock upont 1e sides.

5. In an apparatus of the class described, a base and movable sides sha ted to constitute a pattern for thcbottom and sides of the core and to form the lower portion and sides of the lid sent. and an arbor on the base consisting of a tubular body ada nod to form the backbone of the core. loosely swinging ribs hung at intervals on the tubular body and niotal "nd pieces adapted to constitute the core ends.

6. In an apparatus of the class described, a base and movable sides adapted to constitute a pattern for the bottom and sides and an arbor on the base consisting of a tubular body adapted to form the back bone of the core, loosely swinging inverted U shaped ribs hung at intervals on the tubular body and metal end pieces adapted to constitute the core ends.

7. In an apparatus of the class described, a base and movable sides sha )ed to constitute a pattern for the bottom and sides of the core and an arbor on the base, consisting of a tubular body adapted to form the. back bone of the. core, loosely swinging inverted U shaped ribs hung at intervals on-the tubular body and having lateral tins and metal end pieces adapted to constitute the core ends.

8. In an apparatus of the class described, a base and movable sides sha )ed to constitute a pattern for the bottom and sides of the core and an arbor on the base consisting of a tubular body adapted to form the back bone of the core, loosely swinging inverted U shaped ribs hung at intervals on thetubular body and having oppositely extending lateral fins and metal and pieces adapted to constitute the core ends.

9. In an apparatus of the class described, a.

' base and movable sides sha )ed to constitute a pattern for the. bottom am sides of the core and an arbor on the base consisting of a tubular body adapted to form the back bone of shaped ribs hung at. intervals on the tubular body and having op iositely extending lateral fins and metal and pieces ada )ted to constitute the core ends and having ateral flanges extending completely around the outer margin and adapted to form protecting metal edges for the green sand.

10. In an apparatus of the class described, mechanism shaped to form the sides and bottom of a core com )lete with the bottom portion and sides of die lid seat in combination with a transverse top bar that constitutes both a positive lock for portions of the mechanism and a iattern for the top portion of the lid seat 0 the core.

11. In an improved ap aratus of the class or a dry sand plate consisting of an upper member having depending members.

12. In an improved apparatus of the class san described, a base shaped in contour to form a pattern for the lower portion of the core, sides hinged to the base and shaped in contour to form a pattern for the sides of the core, a transverse locking pieee for seeurin" the sides in closed position, and n meta frame for a dry sand plate consisting of an upper member and two lower side Inserts; and said up )01' member having lugs for additionally loe ing the hinged sides in closed position.

13. In an improved ap )arntus of the class described, a metal frame or a dry sand plate eonststing of an upper member having depending end portions and two lower side end portions and two lower side f members; said members being hollow and 1 adapted to fit around mind support the dry plate. 14. In an improved apqiarat us of the class described. a base shaped in contour to form a pattern for the lower p rtion of the cone, sides hinged to the baseand shaped in com tour to form a pattern fi-or the sides of the core, a transverse locking piece for seeurin the sides in closed position. and a slottes metal plate fora drv samdl plate consisting of j a plurality of members mod the upper member having lugs for p'mzmvely locking the i t i i l hinged sides' in closed position.

I JAMES Y. GIBNEY. \Vitnesses:

L. M. Saxosnm, GEORGE A. Nnrmnm. 

